These São Paulo-based companies are managed service providers, predominantly operating in IT services and IT consulting. The list includes large groups like Stefanini Group, a global company offering automation, cloud, and AI solutions, and TIVIT, a provider of digital solutions in Latin America. Other notable firms are V.tal, a global provider of digital infrastructure with a large fiber optic network, and Prodam, an IT and communication solutions integrator for the City of São Paulo. Most of these firms are headquartered in São Paulo, indicating a concentration of IT and telecommunications expertise in the city. The companies span a range of founding dates, from established players like Prodam (1971) to more recent entrants such as Scala Data Centers (2020).
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Stefanini Groupstefanini.com
A global company offering a wide range of innovative services such as automation, cloud, IoT, UX, AI, consulting, and marketing solutions |
24,358 | |||
| 2 | 11,271 | ||||
| 3 | 3,386 | ||||
| 4 |
LEGALoperadora.legal
LEGAL provides technology rental and subscription services in São Paulo, offering solutions such as internet, drones, WiFi infrastructure, IoT, and gadget rentals for businesses and events |
2,576 | |||
| 5 | 2,120 | ||||
| 6 |
Stefanini North America and APACstefanini.com
A multinational company offering innovative technological solutions to help clients transform their business through digital innovation and co-creation for a better future |
1,999 | |||
| 7 |
Prodamportal.prodam.sp.gov.br
Strategic IT and communication solutions integrator for the City of Sao Paulo, enhancing citizen quality of life through innovative and transparent measures |
1,759 | |||
| 8 |
T-Systems do Brasilt-systems.com
Global leader in IT & Communications Technology, offering integrated solutions in Digital, SAP, Cloud, Infrastructure, and Security with focus on innovation and customer satisfaction |
1,528 | |||
| 9 |
Globalweb Corpglobalweb.com.br
Cloud services provider offering ERP, CRM, security, data storage, and infrastructure solutions tailored to enhance business competitiveness with modern technology services |
1,443 | |||
| 10 |
Iron Mountain Brasilironmountain.com.br
Global firm specializing in storing, protecting, and managing information and assets for over 220k clients worldwide through digital solutions, data management, and secure destruction services |
1,030 | |||
| 11 |
NTT DATA BRASILnttdata.com
Global IT services arm of NTT with over 75,000 employees in 40+ countries Leading provider of innovative IT solutions benefiting businesses and organizations |
921 | |||
| 12 |
Scala Data Centersscaladatacenters.com
Leading Latin American provider of sustainable hyperscale data centers, offering customized solutions with high availability, energy efficiency, superior density, and ESG practices |
904 | |||
| 13 |
Huawei Brasilhuawei.com
Global leader in ICT solutions, focusing on telecommunications, devices, and cloud computing Committed to creating value for telecom operators, businesses, and consumers worldwide |
775 | |||
| 14 |
Service IT.service.com.br
Specializing in IT solutions and services such as outsourcing, cybersecurity, and consultation Providing monitoring and management through own operation centers in multiple countries |
751 | |||
| 15 |
Vivo Vitavitait.com
IT Integrator and Service Provider with expertise in Connectivity, Mobility, Collaboration, Video, Automation, Datacenter, and Virtualization solutions, along with Advanced Services and Managed Services |
746 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Locaweblocaweb.com.br
A pioneering leader in hosted IT services in Brazil, offering a range of solutions from website hosting to cloud computing and VoIP telephony services |
718 | |||
| 17 |
Logicalis Brasillogicalis.com
Global technology solutions and services provider with operations across five continents, serving over a thousand clients with innovative technology solutions for business digitalization |
698 | |||
| 18 |
green4Tgreen4t.com
Provider of technology and digital infrastructure solutions in Latin America, serving companies, cities, and nations for enhanced connectivity and efficiency |
674 | |||
| 19 |
RTMrtm.net.br
Integrator hub in Brazilian financial market, providing secure technological solutions to over 700 institutions, connecting key players in the industry |
660 | |||
| 20 |
Skyoneskyone.solutions
A technology solutions provider focused on agility, innovation, and simplifying business processes to help companies evolve and improve customer experiences |
610 | |||
| 21 |
SAMMsamm.com.br
A national telecommunications company specializing in internet access, long-distance transport links, high-capacity services, and customized telecom solutions for corporate clients |
556 | |||
| 22 |
ODATA - An Aligned Data Centers Companyodatacolocation.com
A data center provider offering scalable IT infrastructure solutions across the Americas, meeting power, space, and reliability needs for various industries |
543 | |||
| 23 |
Samsung SDS Latin Americasamsungsds.com
A technology services company in Latin America, part of the Samsung Group, offering a wide range of innovative services for digital transformation |
425 | |||
| 24 |
NESSness.com.br
Strategic partner specializing in business processes, technology, and innovation Delivering results, managing risks, and driving efficiency for over 25 years |
418 | |||
| 25 |
Magalu Cloudmagalu.cloud
A cloud services platform empowering tech teams in Brazil with local engineering, simple interface, competitive prices, Portuguese support, and local payment methods |
406 | |||
| 26 | 372 | ||||
| 27 | 314 | ||||
| 28 |
Tech Mahindra - Brasiltechmahindra.com
A global tech company offering consulting, digital transformation, integrated engineering, and services, with innovative solutions to drive tangible business value for partners |
244 | |||
| 29 |
Dedalusdedalusprime.com
Specialized in Cloud Computing and Data services, we stand out in the Technology market for our innovative leadership We help companies explore their full potential |
227 | |||
| 30 | 194 | ||||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in São Paulo
- The largest companies in São Paulo 3,842
- Multinational companies in São Paulo 472
- Financial Services companies in São Paulo 440
- Retail chains in São Paulo 397
- Financial services firms in São Paulo 381
- Education providers in São Paulo 293
- Manufacturers in São Paulo 279
- Companies with a mobile app in São Paulo 277
- Critical infrastructure operators in São Paulo 251
- IT Services and IT Consulting companies in São Paulo 239
- E-commerce companies in São Paulo 218
- Retail companies in São Paulo 212
- Professional services firms in São Paulo 200
- Healthcare providers in São Paulo 197
- Corporate groups and holding companies in São Paulo 182
- Fintech companies in São Paulo 171
- Companies with in-house R&D in São Paulo 145
- Consulting firms in São Paulo 138
- IT services companies in São Paulo 130
- Hospitals and Health Care companies in São Paulo 116
- Franchise networks in São Paulo 114
- Subscription businesses in São Paulo 110
- Distributors and wholesalers in São Paulo 103
- Publicly traded companies in São Paulo 102